Approval and Promulgation of Air Quality Plans: State of Missouri
air-emissions · Rule · Published 2011-07-21 · Effective 2011-09-19 · MO · 76 FR 43598
Document
Document number
2011-18176
Federal Register citation
76 FR 43598
CFR reference
40 CFR 52
Type
Rule
Action
Direct final rule.
Category
air-emissions
Publication date
2011-07-21
Effective date
2011-09-19
State
MO
EPA docket
EPA-R07-OAR-2011-0451
Abstract
EPA is approving an April 20, 2011, request from the State of Missouri to exempt sources of Nitrogen Oxides (NO<INF>X</INF>) in the Missouri portion of the St. Louis (MO-IL) metropolitan 8-hour ozone nonattainment area from the Clean Air Act (CAA) requirements for NO<INF>X</INF> Reasonably Available Control Technology (RACT) for purposes of attaining the 1997 8-hour ozone National Ambient Air Quality Standard (NAAQS). The Missouri NO<INF>X</INF> RACT waiver request for its portion of the St. Louis metropolitan 8-hour ozone nonattainment area is based on the most recent three years of complete, quality-assured ozone monitoring data, which demonstrate that additional reductions of NO<INF>X</INF> emissions in the Area would not contribute to attainment of the 1997 8-hour ozone NAAQS.